The next event, that is going right now on Beta, is testing the very first building that lets us switch between a choice of four different productions, depending on chapter. It is an evolving building and for my chapter 13 Beta city, I have a choice of it producing supplies, seeds, tier 2 boosted sentient goods, or vallorian troops. I expect this to be restricted to grand prize buildings for now and not added to just any building, but maybe there is a chance some day of seeing stuff like this as daily prizes too.